Hello,
I had a customer how have a problem with voice muting when he calls PSTN or receive calls from PSTN for a seconds, the device map is SPA400-----SR216------SR216(the switches are connected wireless)-------SPA9K, all the devices are with the latest firmware, I asked him to send me the configurations files and I noticed that the force media proxy was enabled after disabling it the problem was solved for a while and now occur again ,any ideas how to solve this problem? Thanks in advance